The use of null values in a relational database to represent incomplete and inapplicable information

Wilson, Maria Marshall.2015-12-312015-12-311986http://hdl.handle.net/2097/27590Call number: LD2668 .T4 1985 W547Database management.Data structures (Computer science)Truth-functions.The use of null values in a relational database to represent incomplete and inapplicable informationTextMasters theses